Jiralhanae Chieftain
From Halopedia, the Halo wiki
The Brute Chieftain is a Covenant rank for the Jiralhanae (Brute) race, the highest in the Jiralhanae heirarchy. In Halo 2, there is only one known, Tartarus, who was killed by the Arbiter and his Sangheili allies on Delta Halo. He used a supernaturally powerful gravity hammer called the Fist of Rukt.
In Halo 3, they will command a "pack" of lesser Brutes, and will enforce the pack-like mentality.
In the Halo 3 video documentary "Et Tu, Brute?", the are further Brute chieftains seen, although probably not as high as Tartarus, who was believed to be the highest of the Jiralhanae, seen and they wear very elaborate gold armor, breast-plates, and an even more intricate headdress. A certain Brute Chieftain was seen wielding a handheld two-handed plasma cannon emplacement: unusual, as it is normally on a tripod.
